When the plunger in a transparent cylinder is rapidly pushed down over a piece of cotton or paper towel, ignition occurs. This is one of the most impressive demonstrations of the heat produced when a gas is rapidly compressed - the principal of the Diesel engine ignition. Safety Glasses required. Stands approximately 22 cm tall (~8.5"). (Not Appropriate for Elementary Schools)
Comfort Knob for Fire Syringe: This heavy duty spherical knob makes the Fire Syringe easier to use. Recommended for anyone that does repeated demonstrations. Also makes a great replacement part.